Evidence map›Paper›PMID 26042208›Full record

ArticleJournal of clinical & translational endocrinology2015

Circulating levels of fibroblast growth factor-21 increase with age independently of body composition indices among healthy individuals.

Lynae J Hanks, Orlando M Gutiérrez, Marcas M Bamman, Ambika Ashraf, Kenneth L McCormick, Krista Casazza

Open access · goldAbstract read
In one paragraph

Article in Journal of clinical & translational endocrinology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 65 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
65citing papers in PubMed, 2 pooled it
3.0field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

65 citing papers in PubMed, 2 syntheses or guidelines pooled it, 100 citations in OpenAlex.

  1. Proteomic Markers of Aging and Longevity: A Systematic Review.International journal of molecular sciences · 2024
    Pooled it
  2. Pooled it
  3. Trial
  4. Review
  5. Article
  6. Review
  7. Article
  8. Hepatic FGF21 Deletion Improves Glucose Metabolism, Alters Lipogenic andInternational journal of molecular sciences · 2025
    Article
  9. Article
  10. FGF21 acting on the noradrenergic nervous system protects against influenza virus infection.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  11. Article
  12. Article
  13. Circadian clock communication during homeostasis and ageing.Nature reviews. Molecular cell biology · 2025
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Review

5 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Lynae J HanksDepartment of Pediatrics, Division of Pediatric Endocrinology, Children's Hospital of Alabama (COA), University of Alabama at Birmingham (UAB), CPPII M30, 1601 4 Ave S, Birmingham, AL 35233; hankslj@uab.edu.
Orlando M GutiérrezDepartment of Medicine, UAB, ZRB 614, 1720 2nd AVE S, Birmingham, AL 35294-0006; ogutierr@uab.edu.
Marcas M BammanDepartment of Cell, Developmental, and Integrative Biology, Center for Exercise Medicine, Geriatric Research, Education, and Clinical Center, Birmingham Veterans' Affairs (VA) Medical Center, UAB, MCLM 966, 1530 3 Ave S, Birmingham, AL 35294-0005; mbamman@uab.edu.
Ambika AshrafDepartment of Pediatrics, Division of Pediatric Endocrinology, COA, UAB, CPPII M30, 1601 4 Ave S, Birmingham, AL 35233; aashraf@peds.uab.edu.
Kenneth L McCormickDepartment of Pediatrics, Division of Pediatric Endocrinology, COA, UAB, CPPII M30, 1601 4 Ave S, Birmingham, AL 35233; KMcCormick@peds.uab.edu.
Krista CasazzaDepartment of Pediatrics, Division of General Pediatrics and Adolescent Medicine, COA, UAB, CPPI 310, 1601 4 Ave S, Birmingham, AL 35233-1711; kcasazza@peds.uab.edu.
University of Alabama at Birmingham Hospital · USChildren's of Alabama · USGeriatric Research Education and Clinical Center · US

Funding

UAB Center for Clinical and Translational Science (CCTS)UL1TR001417 · NCATS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI KIMBERLY, ROBERT P. · 2015 to 2018
$31.4M
University of Alabama at Birmingham's Diabetes Research CenterP30DK079626 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI Kirk Michael Habegger · 2013 to 2026
$19.5M
UAB-UCSD O'Brien Core Center for Acute Kidney Injury ResearchP30DK079337 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI AGARWAL, ANUPAM · 2008 to 2022
$18.3M
UAB Center for Clinical and Translational Science (CCTS) UL1UL1TR000165 · NCATS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI KIMBERLY, ROBERT P. · 2012 to 2013
$9.6M
TRAINING IN CELLULAR PHYSIOLOGY MEMBRANE TRANSPORTT32DK007545 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI GUTIERREZ, ORLANDO M · 1987 to 2023
$4.5M
MUSCLE PLASTICITY TRAINING /DETRAINING IN OLDER ADULTSR01AG017896 · NIA · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI BAMMAN, MARCAS M · 2001 to 2011
$2.6M
Impact of disordered mineral metabolism on stroke and cognitive impairmentR01NS080850 · NINDS · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI GUTIERREZ, ORLANDO M · 2012 to 2016
$1.2M
Puberty-Related Intervention to Improve Metabolic Outcomes - The PRIMO StudyR00DK083333 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI CASAZZA, KRISTA · 2011 to 2013
$726k
Phosphorus-based Food Additives, Mineral Metabolism and Cardiovascular HealthR03DK095005 · NIDDK · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI GUTIERREZ, ORLANDO M · 2012 to 2014
$543k
NCATS NIH HHS UL1 TR000165NCATS NIH HHS UL1 TR001417NIA NIH HHS R01 AG017896NIDDK NIH HHS P30 DK079337NIDDK NIH HHS P30 DK079626NIDDK NIH HHS R00 DK083333NIDDK NIH HHS R03 DK095005NIDDK NIH HHS T32 DK007545NINDS NIH HHS R01 NS080850
6 · The paper itself

Abstract

backgroundCirculating FGF21 levels are commonly elevated in disease states. There is limited information regarding concentrations of circulating FGF21 in the absence of disease, as well as age-related differences in body composition that may contribute to FGF21 regulation across groups.

objectiveThe objectives of this study were to assess FGF21 levels across age groups (childhood to elder adulthood), and investigate whether body composition indices are associated with age-related differences in circulating FGF21. MATERIALS AND

methodsWe cross-sectionally analyzed serum concentrations of FGF21 in 184 healthy subjects aged 5-80y (45% male). Multiple linear regression was performed to assess the independent association of categorical age (children: 5-12y, young adults: 20-29y, adults: 30-50y, older adults: 55-64y, elder adults: 65-80y) with FGF21 concentration taking into account DXA-measured body composition indices [bone mineral density (BMD) and percent lean, trunk, and fat mass]. We also stratified analysis by tertile of FGF21.

resultsIncremental increases in FGF21 levels were observed across age groups (youngest to highest). Age group was positively associated with FGF21 level independent of body composition indices (age group variable: β=0.25, 0.24, 0.24, 0.23, all

conclusionsOur findings in a healthy population display an age-related increase in serum FGF21, highlighting a potential age effect in response to metabolic demand over the lifecourse. FGF21 levels increase with age independently of body composition. At lower levels of FGF21, BMD, but not other body composition parameters, attenuates the association between FGF21 level and age, suggesting the metabolic demand of the skeleton may provide a link between FGF21 and energy metabolism.

Indexed as

agingbody compositionFibroblast growth factor 21

Identifiers

PMID26042208
PMCPMC4450097
OpenAlexW1969937968

What OpenQuestion holds

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LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.